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Finding the Fourth Proportional to 70,002.40, 105,003.60 and 63,878.80

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Solution

The fourth proportional to 70,002.40, 105,003.60 and 63,878.80 is: 95,818.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,002.40 : 105,003.60 = 63,878.80 : x
  2. Step 2: Convert to fraction form
    70,002.40/105,003.60 = 63,878.80/x
  3. Step 3: Cross multiply
    70,002.40x = 105,003.60 × 63,878.80
  4. Step 4: Simplify right side
    70,002.40x = 6,707,503,963.68
  5. Step 5: Solve for x
    x = 6,707,503,963.68/70,002.40
  6. Step 6: Final answer
    x = 95,818.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.